Diamond aircraft seem to have been the go-to choice for electrification, with Boeing and Airbus fielding different versions powered by an array of powerplants. In 2008,Boeing’s fuel cell-powered craft, a DA-36 Dimona motorglider, “was modified by [Boeing Research and Technology Europe] (BR&TE) to include a Proton Exchange Membrane (PEM) fuel cell/lithium-ion battery hybrid system to power an electric motor coupled to a conventional propeller.” Airbus’ 2011 DA-36 “E-Star’s” propeller was powered by a 70kW electric motor from Siemens, with electricity supplied by a small Wankel engine from Austro Engine with a generator functioning solely as a power source. In 2014, Airbus showed an improved version of this craft at the Paris Air Show. Erik Lindbergh chose the Diamond HK-36 for …